baber/WOPTO huggingface dataset:
Patent GB-1043550-A (GB)
Title: Improvements in or relating to tape recording and playback apparatus
Inventor: SANDS JAMES CUNNINGHAM
IPC: G11B15/44
Filed: 1963-09-10
Abstract: 1,043,550. Tape recording apparatus. PYE Ltd. Sept. 7, 1964 [Sept. 10, 1963], No. 35583/63. Heading G5R. The spool carriers 8L, 8R, Fig. 1 (not shown), of a tape recording/playback apparatus, are mounted on respective arms 17L and 17R pivotally attached to a base plate, the arms being biased outwards by a spring 14 joining the ends of the arms and being movable inwards by means of respective solenoids 5L and 5R. In the rest position shown, respective brake units 16L and 16R make contact with central drum portions of the spool carriers. When the tape is required to move from left to right, solenoid 5R is actuated to rotate lever 17R, thereby moving the spool carrier 8R out of contact with brake 16R and into contact with a rotating spindle 18 by which it is driven; the brake 16L continues to engage spool carrier 8L to provide back tension. Rapid alteration of the direction of tape feed is possible by reversing the energizations of the two solenoids. The electric supply to the solenoids is preferably insufficient to energize both simultaneously. The tape path may include guides 13, erase heads 9 and 12 adapted to operate on respective tracks, and a stacked or in line record/playback head 10 against which the tape is held by a pressure pad 11.
Patent GB-1498624-A (GB)
Title: Manufacture of refractory articles
IPC: C04B35/48
Filed: 1974-08-13
Abstract: 1498624 Refractories ZIRCONAL PROCESSES Ltd 17 Sept 1975 [13 Aug 1974]35610/74 Heading ClJ [Also in Division B5] Refractory articles are made by pouring a slurry comprising a refractory powder and a gellable binder into a mould or over a pattern, allowing it to set and removing the resultant green article for drying and firing, the binder being based on aqueous zirconium salt solution and the slurry (i) containing, or being subsequently treated with, a gel-inducing substance which reacts with the salt to form zirconium oxide or hydroxide and cause setting, and (ii) containing a gel-controlling substance which controls the reaction and setting effects of the gel-inducing substance, both said substances being destroyed, removed or converted to a refractory during firing. Subsequent treatments of the slurry with the inducing substance include dusting with powdered material or applying a mist of ammonia vapour. In the manufacture of moulds, the article may be dried by igniting escaping alcoholic solvent. Examples describe the production of crucibles, element carries, well blocks, orifice rings and moulds which are fired at 1000-1600‹ C. Specified materials are: Zirconium salt: acetate, formate, oxychloride (all acidic in solution) and ammonium zirconium carbonate (alkaline solution). Gel-inducing substances: mono-, di- and triethanolamine, other alkanolamines (examples given), morpholine, magnesia and magnesia-containing spinels. The latter two substances may contribute to the refractory. Triethanolamine may be mixed with NH 4 Cl, acetic acid or triethanolamine hydrochloride which act as gel-controlling substances). Gel-controlling substances: magnesium acetate and lactate, ammonium lactates, fructose, betaine, glycine, sorbitol, mannitol, glycerol, ethylene glycol and (for alkaline Zr salts) aminoalcohols (examples given). Supplementary controlling substances include MgCl 2  and alkali metal and ammonium borates. Refractory powders: may comprise sillimanite, aluminosilicate, alumina, zircon, zirconia, chrome, magnesia, magnesia containing spinels, mullite, silicon carbide and clays.
Patent GB-1069565-A (GB)
Title: Improved ear sleeper
Inventor: JOHANSON WILLIAM ALFRED
IPC: A44C7/00
Filed: 1964-09-01
Abstract: 1,069,565. Ear rings. ARGYLE EAR SLEEPER CO. Ltd. Sept. 1, 1964, No. 35639/64. Heading A3H. An ear sleeper comprises two telescoping arcuate elements 1 and 2. The element 2 has a rounded end 3 which passes through a pierced ear lobe and then into one end of the tubular element 1.
Patent GB-432410-A (GB)
Title: Improvements in or relating to valves
IPC: F15B13/04
Filed: 1934-12-12
Abstract: 432,410. Valves. ROSS OPERATING VALVE CO., 6488, Epworth Boulevard, Detroit, Michigan, U.S.A.-(Assignees of Bowen, G. M. ; 6488, Epworth Boulevard, Detroit, Michigan, U.S.A.) Dec. 12, 1934, No. 35665. Convention date, Sept. 22. [Class 135] A valve structure for controlling the admission and exhausttion of compressed air to opposite ends of a cylinder for operating a piston comprises a common inlet port 5, Fig. 9, an outlet port 8, 14 for each end of the cylinder, and a reducing valve 23, Fig. 4, between the pressure chambers 4, 16 communicating with the ports 8, 14 respectively so that the air supplied to opposite ends of the cylinder is at different pressures. A valve 11 controls the flow of pressure air from the chamber 4 to the outlet port 8 and an exhaust valve 32 puts the port 8 into communication with a passage 30 extending to an exhaust chamber 19 and outlet 22, the valves 11, 32 being opened and closed alternately. A similar valve 18 controls the admission of pressure air to the outlet port 14 which is put into communication with the passage 30 and chamber 19 bv a valve 33 when the valve 18 is closed. The valves 11, 18, 32, 33 are operated by a handle 34 so that when one end of the cylinder is being exhausted, the other end is receiving pressure air. The reducing valve 23, comprises a spring-pressed ball or disc 24, the spring pressure being adjustable from outside the structure by a screwed plug 27 to vary the difference in pressure in the air supplied to the opposite ends of the cylinder.
Patent GB-772852-A (GB)
Title: Improvements in or relating to crystalline alkali metal silicates
IPC: C01B33/32
Filed: 1954-12-10
Abstract: <PICT:0772852/III/1> Hydrated alkali metal silicates having a M2O:SiO2 ratio of 1.75:1 to 2.25:1 are prepared by mixing an alkali metal metasilicate liquor at 80-100 DEG C. with an alkali metal hydroxide solution of not more than 74 per cent strength at 70-90 DEG C. in amounts to give the desired M2O:SiO2 ratio and subjecting the resultant liquor to thermal crystallization.  The preferred alkali metal hydroxide concentration is 70 to 74 per cent, NaOH, for example.  The preferred products have an Na2O:SiO2 ratio of about 2:1 and contain 5 to 6 molecules of water.  The invention is exemplified by the preparation of sodium silicate in which sodium metasilicate hydrate liquor is first dehydrated down to about 3.65 to 3.85 mols. of water and maintained at 80 to 100 DEG C.  The aqueous caustic soda solution may be held at 70 to 90 DEG C. and the two raw materials may be combined in the ratio desired in the final product, it being preferred that the mixture is effected in small quantities which may be continuously delivered to a flaking drum.  As shown in Fig. 1 of the drawings sodium hydroxide and sodium metasilicate are fed to a reaction vessel A provided with a stirrer C suitably rotated at 100 to 255 r.p.m., the mixture then flowing through line D to a steam-heated drum E mainained at 100 to 160 DEG C.  The flake crystals are removed by blade G and are conditioned in a rotary conditioner J wherein the product is tumbled to cool and to permit the escape of water.  According to an example, a solution of sodium silicate of formula Na2SiO3.3.75H2O at 87 DEG C. is mixed with 73 per cent NaOH at 90 DEG C. in a mixer and the mixture continuously withdrawn from the mixing zone to flaking drums maintained at 155 DEG C.  The mixing time may be 26 seconds and the crystallization on the drums about 54 seconds; the final product analysis 2Na2O.SiO2.5.4H2O. Further Examples relate to the preparation of alkali metal silicate liquors having an Na2O.SiO2 ratio of 1.75:1, 2.25:1 and containing before passage to the flaking drum 5.7 and 7.1 mols. of water respectively.  The invention is also applicable to potassium, lithium, calcium and rubidium silicates.
Patent GB-1213755-A (GB)
Title: Drive mechanisms for counting devices
IPC: G06M1/00
Filed: 1969-07-17
Abstract: 1,213,755. Counter drive. GENERAL MOTORS CORP. 17 July, 1969 [2 Aug., 1968], No. 35972/69. Heading G4D. [Also in Divisions F2 and G1] Fraudulent revel sing of a counter, such as an odometer, is prevented by a drive which is disabled if reversed. In normal forward operation the rear end of a cam slot 30 carries along a latch 24 with its tooth 34 engaging an internal tooth on the lowest order wheel 14 of the counter. If the drive is reversed the slot 30 cams the latch out of driving engagement (Fig. 3, not shown).
Patent GB-409074-A (GB)
Title: Improvements in or relating to pencils
IPC: B43K21/08
Filed: 1932-12-21
Abstract: 409,074. Pencil holders. WADE, E. M., 13, Hope Street, Liverpool. Dec. 21, 1932, No. 36169. [Class 146 (iii).] In a propelling pencil, the holder tube k for the lead f is operatively connected with the pusher rod d by a lateral projection j provided on a rear or inner part of the tube k and engaging in longitudinal groove g in the forward part of the pusher rod d, which is adapted to co-operate with the projection to affect retraction of the tube k together with the rod d, while permitting independent lead-expelling movement of the rod d upon arrest of the tube k at the termination of the normal propelling action. The ends h, m of the groove g form stops for the projection j, the stop h serving to engage the projection during retraction, the stop h and projection j being pressed together by a spring n, while the stop m limits the extent to which the rod d can move forward relatively to the tube k, which is in the form of a split sleeve, frictionally mounted on the rod d. The motion of the rod d is obtained by a pin thereon which engages in the usual way through slotted sleeves with a screw thread c on the pencil barrel.
Patent GB-1479955-A (GB)
Title: Conjugated diolefin polymerization catalyst
IPC: C08F36/04
Filed: 1974-08-19
Abstract: 1479955 Butadiene polymerization catalyst EXXON RESEARCH & ENG CO 19 Aug 1974 [30 Aug 1973] 36356/74 Heading C3P Butadiene is polymerized to form a polymer having predominantly trans 1,4-structure using a catalyst system comprising (a) TiI4 or a composition of TiX 4  where X is chlorine or bromine and I 2 , AlI 3  or SnI 4 , (b) trialkylaluminium or dialkylaluminium halide, and (c) a Lewis base which is a cyclic thioether or a substituted tetrahydrofuran, the molar ratio of (b) to (a) being 1 : 1 to 20 : 1 and the molar ratio of (c) to the TiI 4  or TiX 4  component of (a) being 10 : 1 to 500 : 1. By adding component (c) after the polymerization has started it is possible to obtain stereoblock polymers of cis- and trans-structures. Examples refer to the solution polymerization of butadiene using (a) TiI 4  or AlI 3 , SnI 4  or I 2  mixtures with TiCl 4  or TiBr 4 , (b) Et 3 Al, and (c) tetrahydrothiophen or tetrahydrothiopyran.
Patent GB-304756-A (GB)
Title: Improvements relating to the separation of liquids by distillation
IPC: B01D3/40
Filed: 1928-12-12
Abstract: 304,756. Distilleries des Deux-Sevres. Jan. 26, 1928, [Convention date]. Drawings to Specification. Alcoholic liquids, distilling; distilling processes, -In separating liquids miscible with water from liquids which are insoluble or only slightly soluble therein, the mixture to be separated is fed into a distillation column and a current of water is sprayed into the upper part thereof. The mixture is fed into the middle part of the column as a vapour and the water is preheated to the temperature of the azeotropic mixture which is formed by the water and the insoluble or slightly soluble liquid. The base of the column is heated and the vapours of the azeotropic mixture, which escape at the upper part of the column, are condensed to obtain a liquid which. separates into two layers, one layer consisting of the insoluble or slightly soluble liquid together with a little water, and the other being returned to the column from the base of which a mixture of water and the miscible liquid is collected. Ethyl acetate is separated from a mixture containing 70 parts thereof, 25 parts of alcohol, and 5 parts of water by feeding the vaporized mixture into the column and spraying it with water at 73‹ C. ; an azeotropic mixture of ethyl acetate and water passes the spray and is separated into its constituents by decomposition and an alcohol and water mixture is collected at the base of the column. The process is also applicable to the separation of isopropyl ether from isopropyl alcohol and acetate from alcohol. The Specification as open to inspection under Sect. 91 (3) (a) comprises also purifying alcoholic worts. The worts are introduced at the temperature of boiling, the water spray is heated to about 98‹ C. and dilute alcohol freed from impurities is collected at the base of the distilling column. This subject-matter does not appear in the Specification as accepted.
Patent GB-782483-A (GB)
Title: A method of improving the stability of polyvinyl acetals or polyvinyl ketals or copolymers thereof
IPC: C08K5/58
Filed: 1955-12-21
Abstract: Polyvinyl acetals, ketals, or copolymers thereof are stabilized by the addition of an organo-tin-sulphur compound which may be added before, during or after the preparation of the polyvinyl compound. Specified polyvinyl compounds are polyvinyl butyral, polyvinylacetal (from polyvinyl alcohol and acetaldehyde, dibutyl-tin-dodecyl mercaptide being added before the condensation) polyvinyl formal, and the copolymer made from vinyl chloride, vinyl acetate, vinyl alcohol and vinyl formal. Specified organo-tin-sulphur compounds are dibutyl-tin - dodecyl mercaptide, didodecyl - tin-thiobutyric acid butyl ester, dibutyl-tin-sulphide, didodecyl-tin-dithiobutyric acid butyl ester and an organo-tin-polysulphide of formula <FORM:0782483/IV (a)/1> where X = 1-8 and R is a butyl group.  It is preferred that the proportion of stabilizer used is within the range 0.1-1 per cent on the weight of the polymer.
Patent GB-904681-A (GB)
Title: Substituted hydrazines and process for their preparation
Filed: 1960-10-26
Abstract: The invention comprises compounds of the general formula <FORM:0904681/IV (b)/1> wherein X represents a hydrogen or a halogen atom, a hydroxy or a C1-4 alkoxy group, R1 and R2 represent C1-4 alkyl groups of the formula CnH2nY, wherein n is 2 or 3 and Y is a chlorine atom or a hydroxy, di-(C1-4 alkyl) amino, piperidino, morpholino, piperazino or pyrrolidino group and the preparation thereof by either (a) reacting a phenone of the formula <FORM:0904681/IV (b)/2> with a carbazic acid derivative of the formula <FORM:0904681/IV (b)/3> to form the hydrazone <FORM:0904681/IV (b)/4> and reducing the hydrozone, preferably catalytically, if desired carrying out the condensation and reduction in a single step; or (b) reacting a hydrazine of the formula <FORM:0904681/IV (b)/5> with a carbonate of the formula <FORM:0904681/IV (b)/6> to form the compounds of the invention wherein R2 is CnH2nOH, and (c) if desired, treating the compounds obtained from (a) or (b) in which R2 is CnH2nOH with a chlorinating agent to convert R2 to CnH2nCl., and (d) if desired, treating the compounds from (e) with a di-(C1-4 alkyl) amine, piperidine, morpholine, piperazine or pyrrolidine to replace the chlorine atom by the corresponding amino group.  Anti depressant compositions comprise the compounds of the invention in admixture with a pharmaceutical carrier.  The compositions may be in the form of tablets, capsules, syrups elixirs, parenteral solutions and suppositories.
Patent GB-942101-A (GB)
Title: Apparatus of use in solving field equations of the laplace type by analogue methods
IPC: G06G7/44
Filed: 1961-10-13
Abstract: 942,101. Variable resistors. K. W. E. GRAVETT. Sept. 21, 1962, [Oct. 13, 1961], No. 36751/61. Heading H1S. [Also in Division G4] Apparatus for solving a Laplace field equation, e.g.- of a two dimensional or superficial system comprises a supported film of high silver content photo-sensitive material which has been exposed to light, developed, and fixed, having a shape geometrically similar to the system, and of an electrical conductivity for each element dependent on the extent of exposure of such element; the exposure being such that the relative values of conductivity between distinct elements of the film correspond to the relative values of the property affecting the strength of the field existing between corresponding parts of the system; there being provided means for applying an electrical potential between spaced locations of the film and means for determining the electrical potential or potential gradient at any desired part of the film. A photographic plate 1 which has been exposed to light, developed, and fixed is provided with fixed electrodes 2, 3 of silver paste which are connected to a fixed direct voltage 4; the conductivity of the film between different elements of the plate having been regulated in accordance with the varying values of the property affecting the strength of the field in the system by exposure to projected images of differing brightness or through light obturating masks. The potential at any point of the plate is determined by applying thereto a variable electrode 5 (e.g. a lead pencil) connected through galvanometer 6 to the slider of a potentiometer 8 across the voltage source. Equipotential lines may be plotted by setting the slider to a series of predetermined potential values and tracing lines on the film with the electrode at which 6 is undeflected, and spot potential values may be obtained by positioning the electrode and adjusting the potentiometer for a null reading at each point. A symmetrical three-dimensional field equation may be represented by using a film whose conductivity has a continuing over-riding gradation from one side to the other obtained by exposure through a suitable filter, and an asymmetrical field equation may be represented by using plural conducting films with electrodes connected in parallel. Circular and nonplanar, e.g. curved films may be employed for special problems.
Patent GB-1241829-A (GB)
Title: Seats
IPC: B60N2/70
Filed: 1968-08-01
Abstract: 1,241,829. Seat frames; cushions. HIMOLLA POLSTERMOBELWERK CARL HIERL G.m.b.H. 1 Aug., 1968 [2 Aug., 1967], No. 36820/68. Headings A4H, A4J and A4M. A seat, preferably for a vehicle, is of foam plastics material throughout and has a frame 4 receiving the lower part of a removable cushion 9, which is of harder foam material than the upper part of the cushion. The cushion 9 may be integrally formed with a border frame 10 of harder foam material. Additionally or alternatively, the cushion may have lower layers of harder foam material. The seat frame 4 includes angle-section metal reinforcement 8 in rigid foam plastics 5, which, in turn, is encased in a metal or plastics sheath. The back rest 2 is pivotally connected to the seat frame 4 and has a rigid foam plastics plate 11 covered with soft foam material 12. To avoid injury in a collision, plastic hinge reinforcements 16 are arranged to break off, when plate 11 fractures.
Patent GB-1345938-A (GB)
Title: Benzodiazepines and process for their manufacture
IPC: C07D243/22
Filed: 1971-08-05
Abstract: 1345938 enzodiazepines SCHERICO Ltd 5 Aug 1971 [7 Aug 1970] 36861/71 Heading C2C Compounds of the general formula (X=halogen, CF 3 , NO 2 ; Y=H, halogen, CF 3 , NO 2 , OH, C 1-6  saturated hydrocarbyl or hydrocarbyloxy; R=C 1-6  polyfluoro-(saturated hydrocarbyl); R 1  = H, C 1-6  saturated hydrocarbyl, their 4-oxides and salts thereof are prepared by reacting the corresponding benzodiaxepin-2-one with a thiating agent, optionally followed by conversion to the 4-oxide and/or salt formation. The above compounds are sedative-hypnotics, tranquillizers, anti-anxiety agents and anticonvulsants, and may be administered in the form of pharmaceutical preparations containing them, with or without other (unspecified) active ingredients, in association with a carrier.
Patent GB-1195025-A (GB)
Title: Improvements relating to Flying Cutting Tool Machines for Operating on Moving Bar or Other Stock.
Inventor: POSTINS JOHN GEORGE
IPC: B23D45/18
Filed: 1966-08-18
Abstract: 1,195,025. Sawing. MIDLAND INDUSTRIES Ltd. 16 Nov. 1967 [18 Aug., 1966], No. 36968/66. Heading B5L. A flying saw machine in which bar or other stock 20 to be cut is advanced and releasably clamped to a carriage 18 which is advanced solely by the stock and on which is a saw 34 for cutting through the stock while it is advanced and then withdrawn from the stock, the carriage being returned to its starting position by a fluid-pressure device 24, comprises control means to cause the device 24 to advance substantially in unison with the saw until the saw has finished the cutting operation and is clear of the stock and when clear of the stock to simultaneously or substantially simultaneously return the carriage to the starting position. The carriage 18 is movable along rails 10, 12 and pivotably supports an arm 32 which carries a saw blade 34 and is movable about a pivot 31 by a piston- and -cylinder device 36. The carriage also carries means for clamping the stock 20 to be cut comprising lower jaws 44, 46 and upper jaws 52, 54 movable by a piston and cylinder device 56, one upper and one lower jaw being on each side of the plane of the saw blade. The upper jaws are carried by a vertically adjustable cross beam 58. A table 63 is secured to the carriage for movement therewith and consists of a pair of angle pieces 65, 67 adjustably secured at one end to a slot 73 in the carriage and supported at the other end by a roller 69. The cylinder of the device 24 is secured to the frame of the machine, and the rod 64 has a shank 68 and shoulder 70 engaging a bush 72 on the carriage. An adjustable set screw 74 on the end of the shank co-operates with a spring pressed lever 76 of a follow-up servo-valve 77 mounted on the carriage. The lever co-operates with a port 82 in the valve to control the supply and exhaust to the device 24 so that as the carriage moves, the rod of the device also advances. As the bar stock advances it engages switch 79 which actuates valve 90 to supply air to the side of the piston of device 24 and connect the large side to exhuast to advance the rod 64. At the same time device 56 is actuated to clamp the stock by downward movement of jaws 52, 54 and advance the carriage, the lever 76 and port 82 co-operating to control the device 24 so as to move the rod 64 as the carriage advances. With movement of the carriage switches are actuated to cause rotation of the motor driving the saw blade and to actuate device 36 to raise the saw blade to cut the stock which is held on both sides of the blade. At the end of the upward cutting motion of the saw, a switch 94 is operated by arm 32 to cause lowering of the saw. When the saw has been lowered the jaws 52, 54 are raised to release the stock and valve 90 is actuated to cause the device 24 to return the carriage 18 to its initial position by engagement of the shoulder 20 with the bush 72.